Electromagnetic bell.



E. W. VOGEL.

ELECTROMAGNBTIG BELL.

APPLICATION FILED NOV. 10, 1009 1,09 1,548, Patented Mar. 31 1914.

2 SHEETSSHEET 1.

W. VOGEL. ELBGTROMAGNBTIC BELL. APPLICATON FILED NOV.10,1909.

Patented Mar. 31, 1914.

2 SHEETS-SHEET 2.

@mi 'l am.

my 15191312 rv ai w im wm s 0%' ifm: lovin' my hoi may more, the ciapper and the plunger partially j nounterbalance each other so that the-'clapwith the linger or contact device o. 'Ehe rod T is provided with two separated laterally-projecting buttons t and t1, which respectively overlie and underlie the member V.

Normally the parts occupy the positions indicated in Figs. l and 2. It current is supplied to the contact X,'the magnet will become energized andthe plunger will be drawn down, the button z5 striking against the upper edge of the member V and forcing it down until the roller W engages with the cam V2. In this position of the parts the circuit is broken at the contacts X and o and the magnet becomes denergized. As soon as this happens the striker drops back until it engages with the buferg, raising the plunger of the magnet and the rod T until the button I. engages with the underside of the member V and lifts this meinber suiliciently to brin the cam V1 into operative relation with t e roller as indicated in Fig. l. It willvbe seen that the counter` weight V3 slightly overbalances the member V so as to assist the device Win holding the contacts o ltogether when the parts are` in the positions indicated in Figa/1. The clapper and the plunger partially counterbalance each other so that the clapper will reboiind frbm the buii'er and will oscillate back and forth until it comes to resta proximatel in the position indicated, 1n which position the member V is clear of both of the buttons t and t1. This oscillating of the clapper until it Ends 'its position of rest occurs only, of course, incase the current is shut o for, if current continues to be supplied, the magnet will be energized again as soon as the switch returns to the position indicated and the plunger will again be drawn downwardly in the manner previ,- ouslydescribed. In this construction, the parteI are so, proportioned that the plunger substantially completes' its working stroke 'beforethe switch is actuated, so that the full .power of themagnet is utilized to drive the clapper against thebell. Furthermore, the rmake and break is effected quickly andthe final movement of the movable switch member isy brought about automatically after'the member V has passed the center. Furtherp'er responds quickly when power is applied and will'accomplish itswork with the expenditure of only a small amount of electrical energy. Furthermore, all of the parts are inclosed so that there is no danger of,y disarrangcment ol. the mechanism through/ the entrance of foreign matter. It will be seen that the only parts which require adjustment are the `switch mechanism and the bali ot the chipper. The switch mechanism is all inclosvfl within a sealed compartment downwardly from saidcore', said having an arm extending past -said"rod, shoulders on said rod above and below said arm in positions to engage with thel arm when the core moves up and down, and means associated with said arm to complete closure by a While I have 'described in detail only a What I claim is: 1. In an electromagnetic bell, an velectrosaid y the 4. In an electromagnetic bell, an electromagnet having a vertically movable core, a bell striker mounted lso as to be capable ot swinging about a horizontal axis, a connection between the striker and the said core, a 4controlling switch for said electroma et lying beneath the same, a rod extendinn switc to which access may be obtained by opening the doorQ* and the position of the ball on the lower end of the clapper arm may be adjusted through an auxiliary door Q5.

magnet, a movable gravity-returned arma-` ture rfor said magnet,-a bell-striking mem-y ber connected to said Iarmature and gravityactuated inone direction, a controlling circuit for said ma net, a switch in said circuit, said switch aving a movable switch arm,.a device for completing the movement -ofsaid switch arm in either direction after it has been moved a predetermined distance in such direction, and then holding the armin the position into which it has been moved, and shoulders on said armature and lying on opposite sides of said arm and in position to engage therewith for causin arm to be actuated in both directions armature.

,2. In an electromagnetic bell, electromagnetic ringing vmechanism including a movy able armature, a controlling switch having p a movable arm, a spring-pressed member for carrying said arm in ei'ther direction after it has been moved a predetermined dis,- tance in that direction, and coperating shoulders on said armature and on said arm for causing the arm to be actuated by the armature.

3. In an electromagnetic bell, an electro` magnet, a movable armature for said electroma'gnet, a switch arm, a yielding holding member for said arm, coperating cam'faces on said member and on said arm for enabling said member to continue `the movevment of said arm in either direction after. it `has` been brought to a predetermined point, and copcrating shoulderszon said 211'- mature to actuate the arm.

its movement in either direction after it has been moved a predetermined distance in that direction by one of the shoulders.

5. In an electromagnetic bell, a bell striker, an electromagnet having a vertically movable core, a `connection between said striker and'said core, a rod depending from said core, a controlling switch having an arm extending past and in proximity to said rod, shoulders on said rod above and below said arm, and means associated with said arm for throwing it out of engagement with either of said shoulders after it has been moved a predetermined distance by that shoulder.

6. In an electromagnetic bell apparatus, a bell open at the bottom, a casing lying below the bell and closin(Y the mouth thereof, a post extending up om the casing into the bell, means for securing the ton of the bell to the top of the post, a bell striker mounted on said post, and automatic actuating mechanism for said striker carried by said casing.

7. In an electromagnetic bell apparatus, a bell open at the bottom, a casing lying below the bell and closing the mouth thereof, a post extending up from the casino' into the bell, means for` tee ring the top o? the bell tofthe top of the pst, said Casing being divided vinto two comp rtments one of `which is closed at the top and the other of which is open at the top, a bell striker mounted on the post and movable in the top o't` the open compartment, an actuatin magnet for the striker mounted on top o the closed compartment.

8. In an electromagnetic bell apparatus, a bell open at the bottom, a casing lying below the bell and closing the mouth thereof, a post extending up from the casing into the bell7 means for securing the top of the bell to the top of the post, said casing being divided into two compartments one of which is closed at the top and the other of which is open at the top, a bell striker mounted on the post and movable in the top of the open compartment, an actuating magnet for the striker mounted on-top of the closed compartment, switch mechanism in said closed compartment, a connection betivircn said magnet and said switch mechanism, and a door in said closed compartment for giving access to the switch mechanism.

In testimony whereof, I sign this specification in the presence of two witnesses.

EUGENE W. VOGEL.

Witnesses:

WM. F. FRnUnnNnnicH, Binomio SWEET. 

